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Saffir-Simpson scale

Amount of damage Barometric
pressure
Winds Storm surge
Category 1 MINIMAL
Damage to shrubs, trees, mobile homes
28.94 in. 74-95 mph 4-5 ft.
Category 2 MODERATE
Some damage to roofs, doors, windows;
some downed trees
28.50-28.93 in. 96-110 mph 6-8 ft.
Category 3 EXTENSIVE
Minor damage to small buildings, homes;
large trees blown down
27.91-28.49 in. 111-130 mph 9-12 ft.
Category 4 EXTREME
Major damage to buildings;
mobile homes destroyed
27.17-27.90 in. 131-155 mph 13-18 ft.
Category 5 CATASTROPHIC
Buildings, roofs destroyed;
all trees, shrubs, signs downed
< 27.17 in. > 155 mph > 18 ft.

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